diff --git a/mindspore/lite/src/ops/populate/select_populate.cc b/mindspore/lite/src/ops/populate/select_populate.cc
new file mode 100644
index 0000000000..c93674a9ae
--- /dev/null
+++ b/mindspore/lite/src/ops/populate/select_populate.cc
@@ -0,0 +1,36 @@
+/**
+ * Copyright 2020 Huawei Technologies Co., Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "src/ops/select.h"
+#include "src/ops/primitive_c.h"
+#include "src/ops/populate/populate_register.h"
+
+namespace mindspore {
+namespace lite {
+OpParameter *PopulateSelectParameter(const mindspore::lite::PrimitiveC *primitive) {
+  OpParameter *select_parameter = reinterpret_cast<OpParameter *>(malloc(sizeof(OpParameter)));
+  if (select_parameter == nullptr) {
+    MS_LOG(ERROR) << "malloc SelectParameter failed.";
+    return nullptr;
+  }
+  memset(select_parameter, 0, sizeof(OpParameter));
+  select_parameter->type_ = primitive->Type();
+
+  return reinterpret_cast<OpParameter *>(select_parameter);
+}
+Registry SelectParameterRegistry(schema::PrimitiveType_Select, PopulateSelectParameter);
+}  // namespace lite
+}  // namespace mindspore
diff --git a/mindspore/lite/src/ops/select.cc b/mindspore/lite/src/ops/select.cc
new file mode 100644
index 0000000000..c5f4bb4dda
--- /dev/null
+++ b/mindspore/lite/src/ops/select.cc
@@ -0,0 +1,106 @@
+/**
+ * Copyright 2020 Huawei Technologies Co., Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#include "src/ops/select.h"
+
+#ifndef PRIMITIVE_WRITEABLE
+#include "src/ops/ops_register.h"
+#endif
+#include "src/tensorlist.h"
+
+namespace mindspore {
+namespace lite {
+#ifdef PRIMITIVE_WRITEABLE
+int Select::UnPackAttr(const Primitive &prim, const std::vector<AnfNodePtr> &inputs) {
+  if (this->primitive_ == nullptr) {
+    this->primitive_ = new (std::nothrow) schema::PrimitiveT;
+    if (this->primitive_ == nullptr) {
+      MS_LOG(ERROR) << "new primitiveT failed";
+      return RET_ERROR;
+    }
+    this->primitive_->value.type = schema::PrimitiveType_Select;
+  }
+  if (this->primitive_->value.type != schema::PrimitiveType_Select) {
+    MS_LOG(ERROR) << "Primitive type is error :" << this->primitive_->value.type;
+    return RET_ERROR;
+  }
+  if (this->primitive_->value.value == nullptr) {
+    auto attr = new (std::nothrow) schema::SelectT();
+    if (attr == nullptr) {
+      MS_LOG(ERROR) << "new primitiveT value failed";
+      return RET_ERROR;
+    }
+
+    this->primitive_->value.value = attr;
+    if (this->primitive_->value.value == nullptr) {
+      MS_LOG(ERROR) << "primitive value is nullptr";
+      return RET_ERROR;
+    }
+  }
+  return RET_OK;
+}
+#else
+int Select::UnPackToFlatBuilder(const schema::Primitive *primitive, flatbuffers::FlatBufferBuilder *fbb) {
+  MS_ASSERT(nullptr != primitive);
+  MS_ASSERT(nullptr != fbb);
+  auto attr = primitive->value_as_Select();
+  if (attr == nullptr) {
+    MS_LOG(ERROR) << "value_as_Select return nullptr";
+    return RET_ERROR;
+  }
+  auto val_offset = schema::CreateSelect(*fbb);
+  auto prim_offset = schema::CreatePrimitive(*fbb, schema::PrimitiveType_Select, val_offset.o);
+  fbb->Finish(prim_offset);
+  return RET_OK;
+}
+
+PrimitiveC *SelectCreator(const schema::Primitive *primitive) { return PrimitiveC::NewPrimitiveC<Select>(primitive); }
+Registry SelectRegistry(schema::PrimitiveType_Select, SelectCreator);
+#endif
+
+int Select::InferShape(std::vector<Tensor *> inputs_, std::vector<Tensor *> outputs_) {
+  MS_ASSERT(inputs_.size() == 2 * outputs_.size() + 1);
+  if (!infer_flag()) {
+    return RET_INFER_INVALID;
+  }
+  for (size_t i = 0; i < outputs_.size(); i++) {
+    auto *input = inputs_[i + 1];
+    auto *output = outputs_[i];
+    if (input == nullptr) {
+      MS_LOG(ERROR) << "input tensor is nullptr";
+      return RET_ERROR;
+    }
+    if (output == nullptr) {
+      MS_LOG(ERROR) << "output tensor is nullptr";
+      return RET_ERROR;
+    }
+    output->set_data_type(input->data_type());
+    output->set_shape(input->shape());
+    output->set_format(input->format());
+    auto data_type = input->data_type();
+    if (data_type != kObjectTypeTensorType) {
+      continue;
+    } else {
+      auto input_tensorlist = reinterpret_cast<TensorList *>(input);
+      auto output_tensorlist = reinterpret_cast<TensorList *>(output);
+      output_tensorlist->set_element_shape(input_tensorlist->element_shape());
+      output_tensorlist->set_max_elements_num(input_tensorlist->max_elements_num());
+      output_tensorlist->set_tensors_data_type(input_tensorlist->tensors_data_type());
+    }
+  }
+  return RET_OK;
+}
+}  // namespace lite
+}  // namespace mindspore
diff --git a/mindspore/lite/src/ops/select.h b/mindspore/lite/src/ops/select.h
index 26f83d301d..ec19825b1d 100644
--- a/mindspore/lite/src/ops/select.h
+++ b/mindspore/lite/src/ops/select.h
@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-
+#include <vector>
 #include "src/ops/primitive_c.h"
 
 #ifndef LITE_MINDSPORE_LITE_C_OPS_SELECT_H_
@@ -23,10 +23,16 @@ namespace mindspore {
 namespace lite {
 class Select : public PrimitiveC {
  public:
-  MS_DECLARE_PARENT(Select, PrimitiveC);
   Select() = default;
   ~Select() = default;
+#ifdef PRIMITIVE_WRITEABLE
+  MS_DECLARE_PARENT(Select, PrimitiveC);
   explicit Select(schema::PrimitiveT *primitive) : PrimitiveC(primitive) {}
+  int UnPackAttr(const Primitive &prim, const std::vector<AnfNodePtr> &inputs) override;
+#else
+  int UnPackToFlatBuilder(const schema::Primitive *primitive, flatbuffers::FlatBufferBuilder *fbb) override;
+#endif
+  int InferShape(std::vector<lite::Tensor *> inputs_, std::vector<lite::Tensor *> outputs_) override;
 };
 }  // namespace lite
 }  // namespace mindspore
diff --git a/mindspore/lite/src/runtime/kernel/arm/base/select.cc b/mindspore/lite/src/runtime/kernel/arm/base/select.cc
new file mode 100644
index 0000000000..8d393954e2
--- /dev/null
+++ b/mindspore/lite/src/runtime/kernel/arm/base/select.cc
@@ -0,0 +1,66 @@
+/**
+ * Copyright 2020 Huawei Technologies Co., Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#include "src/runtime/kernel/arm/base/select.h"
+#include "src/kernel_registry.h"
+#include "include/errorcode.h"
+#include "src/tensorlist.h"
+
+using mindspore::lite::KernelRegistrar;
+using mindspore::lite::RET_ERROR;
+using mindspore::lite::RET_OK;
+using mindspore::schema::PrimitiveType_Select;
+
+namespace mindspore::kernel {
+int SelectCPUKernel::Init() { return RET_OK; }
+
+int SelectCPUKernel::ReSize() { return RET_OK; }
+
+// inputs: bool*1 true-data*n false-data*n
+// output: data*n
+int SelectCPUKernel::Run() {
+  MS_ASSERT(in_tensors_.size() >= 3);
+  MS_ASSERT(in_tensors_.size() == out_tensors_.size() * 2 + 1);
+  auto bool_tensor = in_tensors_.front();
+  MS_ASSERT(bool_tensor != nullptr);
+  MS_ASSERT(bool_tensor->data_type() == kNumberTypeBool);
+  MS_ASSERT(bool_tensor->Size() == 1);
+  MS_ASSERT(bool_tensor->Size() == 1);
+  auto condition = static_cast<bool *>(bool_tensor->data_c());
+  if (condition == nullptr) {
+    MS_LOG(ERROR) << "data of bool tensor is nullptr";
+    return lite::RET_NULL_PTR;
+  }
+  if (*condition) {
+    auto ret = MoveData(this->out_tensors_.begin(), this->out_tensors_.end(), this->in_tensors_.begin() + 1,
+                        this->in_tensors_.begin() + 1 + this->out_tensors_.size());
+    if (ret != RET_OK) {
+      MS_LOG(ERROR) << "carry data error : " << ret;
+      return ret;
+    }
+  } else {
+    auto ret = MoveData(this->out_tensors_.begin(), this->out_tensors_.end(),
+                        this->in_tensors_.begin() + 1 + this->out_tensors_.size(),
+                        this->in_tensors_.begin() + 1 + 2 * this->out_tensors_.size());
+    if (ret != RET_OK) {
+      MS_LOG(ERROR) << "carry data error : " << ret;
+      return ret;
+    }
+  }
+  return RET_OK;
+}
+
+REG_KERNEL(kCPU, kNumberTypeBool, PrimitiveType_Select, LiteKernelCreator<SelectCPUKernel>)
+}  // namespace mindspore::kernel
diff --git a/mindspore/lite/src/runtime/kernel/arm/base/select.h b/mindspore/lite/src/runtime/kernel/arm/base/select.h
new file mode 100644
index 0000000000..47b99acd5e
--- /dev/null
+++ b/mindspore/lite/src/runtime/kernel/arm/base/select.h
@@ -0,0 +1,38 @@
+/**
+ * Copyright 2020 Huawei Technologies Co., Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#ifndef MINDSPORE_LITE_SRC_RUNTIME_KERNEL_ARM_BASE_SELECT_H_
+#define MINDSPORE_LITE_SRC_RUNTIME_KERNEL_ARM_BASE_SELECT_H_
+
+#include <vector>
+#include "src/runtime/kernel/arm/base/carry_data.h"
+#include "src/lite_kernel.h"
+#include "src/tensorlist.h"
+
+namespace mindspore::kernel {
+class SelectCPUKernel : public CarryDataKernel {
+ public:
+  SelectCPUKernel(OpParameter *parameter, const std::vector<lite::Tensor *> &inputs,
+                  const std::vector<lite::Tensor *> &outputs, const lite::InnerContext *ctx,
+                  const mindspore::lite::PrimitiveC *primitive)
+      : CarryDataKernel(parameter, inputs, outputs, ctx, primitive) {}
+  ~SelectCPUKernel() override = default;
+  int Init() override;
+  int ReSize() override;
+  int Run() override;
+};
+}  // namespace mindspore::kernel
+
+#endif  // MINDSPORE_LITE_SRC_RUNTIME_KERNEL_ARM_BASE_SELECT_H_
diff --git a/mindspore/lite/tools/converter/graphdef_transform.cc b/mindspore/lite/tools/converter/graphdef_transform.cc
index 13aab5803a..a7c8fdd07f 100644
--- a/mindspore/lite/tools/converter/graphdef_transform.cc
+++ b/mindspore/lite/tools/converter/graphdef_transform.cc
@@ -249,19 +249,6 @@ int GraphDefTransform::Transform(const converter::Flags &ctx) {
     }
   }
 
-  // select pass
-  {
-    // init old node indecies
-    auto old_nodes = GetGraphNodes();
-    Optimizer selectOptimizer;
-    selectOptimizer.AddPass(new (std::nothrow) SelectPass(graphDefT));
-    status = selectOptimizer.Run(graphDefT);
-    if (status != RET_OK && status != RET_NO_CHANGE) {
-      MS_LOG(ERROR) << "Run switch graphPasses Failed";
-      return status;
-    }
-  }
-
   // subgraph tensor pass
   {
     Optimizer subgraphTensorOptimizer;